Topic
MCPA
About: MCPA is a research topic. Over the lifetime, 1162 publications have been published within this topic receiving 15850 citations. The topic is also known as: MCP & [(4-Chloro-o-tolyl)oxy]acetic acid.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: How rapidly ALS-inhibitor resistance can evolve can evolve as a consequence of repeated application of herbicides with this site of action is demonstrated, and supports epidemiological information from farmer questionnaire surveys and modeling simulations that mixtures are more effective than rotations in mitigating resistance evolution through herbicide selection.
Abstract: Herbicide rotations and mixtures are widely recommended to manage herbicide resistance. However, little research has quantified how these practices actually affect the selection of herbicide resistance in weeds. A 4-yr experiment was conducted in western Canada from 2004 to 2007 to examine the impact of herbicide rotation and mixture in selecting for acetolactate synthase (ALS) inhibitor resistance in the annual broadleaf weed, field pennycress, co-occurring in wheat. Treatments consisted of the ALS-inhibitor herbicide, ethametsulfuron, applied in a mixture with bromoxynil/MCPA formulated herbicide (photosystem-II inhibitor/synthetic auxin), or in rotation with the non-ALS inhibitor at an ALS-inhibitor application frequency of 0, 25, 50, 75, and 100% (i.e., zero to four applications, respectively) over the 4-yr period. The field pennycress seed bank at the start of the experiment contained 5% ethametsulfuron-resistant seed. Although weed control was only marginally reduced, resistance frequency o...
233 citations
TL;DR: In this article, the adsorption characteristics of the herbicide MCPA (4-chloro-2-methylphenoxyacetic acid) on layered double hydroxides (LDHs) were evaluated under laboratory conditions with particular attention to the effect of layer charge, original interlayer anion and morphology.
219 citations
TL;DR: In this paper, the combination of two active chemicals as the [cation][anion] form in a single moiety reduced the number of additional chemicals required per application, and showed substantially lower water solubility than starting herbicides, thus reducing soil and groundwater mobility.
178 citations
Patent•
12 Nov 1996
TL;DR: In this article, a synergetic action of a mixture of 1-(3-chloro-4,5,6,7-tetrahydrophrazolo-[1,5-a]-pyridin-2-yl)-5-(methyl-propargylamino)-4-pyrazolylcarboxylic acid nitrile [constituent (A)] and a herbicide from the group bentazon, molinate, daimuron, thiobencarb, butachlorine, pretilachlorines
Abstract: The invention relates to herbicidal agents with a synergetic action which are characterised in that they contain as active ingredients a mixture of 1-(3-chloro-4,5,6,7-tetrahydrophrazolo-[1,5-a]-pyridin-2-yl)-5-(methyl-propargylamino)-4-pyrazolylcarboxylic acid nitrile [constituent (A)] and a herbicide from the group bentazon, molinate, daimuron, thiobencarb, butachlorine, pretilachlorine, dimepiperate, fenoxaprop-ethyl, clomeprop, cinmethyline, bromobutide, quinclorac, mefenacet, pyrazosulfuron-ethyl, esprocarb, cinosulfurone, thenylchlorine, cumyluron, MK 243, naproanilide, anilofos, benfuresate, bifenox, CH-900, MCPA, nitrofen, oxadiazon, pendimethaline, simetryn, sulcotrione (ICIA0051), trifluraline, piperophos, pyributicarb, ethoxysulfuron, bensulfuronmethyl, pyrazolate, pyrazoxyfen, benzofenap, cyclosulfamuron, cyhalofop-butyl, NBA-061, azimsulfuron, propanil or imazosulfuron [constituent (B)], and are suitable for controlling undesirable plants in the growing or rice.
165 citations
TL;DR: The results indicate that not all biochar amendments will increase sorption and decrease leaching of fluometuron and 4-chloro-2-methylphenoxyacetic acid (MCPA), and the amount and composition of the organic carbon (OC) content of the amendment, especially the soluble part (DOC), can play an important role in the Sorption andLeaching of these herbicides.
Abstract: Biochar, the solid residual remaining after the thermochemical transformation of biomass for carbon sequestration, has been proposed to be used as a soil amendment, because of its agronomic benefits. The effect of amending soil with six biochars made from different feedstocks on the sorption and leaching of fluometuron and 4-chloro-2-methylphenoxyacetic acid (MCPA) was compared to the effect of other sorbents: an activated carbon, a Ca-rich Arizona montmorillonite modified with hexadecyltrimethylammonium organic cation (SA-HDTMA), and an agricultural organic residue from olive oil production (OOW). Soil was amended at 2% (w/w), and studies were performed following a batch equilibration procedure. Sorption of both herbicides increased in all amended soils, but decreased in soil amended with a biochar produced from macadamia nut shells made with fast pyrolysis. Lower leaching of the herbicides was observed in the soils amended with the biochars with higher surface areas BC5 and BC6 and the organoclay (OCl)....
155 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 8 |
| 2024 | 10 |
| 2023 | 26 |
| 2022 | 53 |
| 2021 | 20 |
| 2020 | 23 |